Kim Sterelny is Professor of Philosophy at Australian National University and Victoria University of Wellington. His books include Language and Reality (with Michael Devitt; second edition, MIT Press).
Michael Ruse is Lucyle T. Werkmeister Professor of Philosophy, Florida State University. The author of many books, including The Philosophy of Biology and Taking Darwin Seriously, he is also the founder and editor of the journal Biology and Philosophy. He has appeared on "Quirks and Quarks" and the Discovery Channel.